The contents of all pages are searched to find links to the current page. The BackLinks function also answers the question: "Which pages contain the title of this page?".
No page links to inittab.
lib/WikiPlugin.php (In template 'body' < 'html'):236: Notice: trailing cruft in plugin args: 'page'
lib/plugin/WlugLicense.php:99: Warning: Invalid argument supplied for foreach()